Door lock



Jan. 16, 1940. w. R. 5cl-:LAGE

noon Locx' 2 Sheets-Sheet 1 Original Filed Jan. 17, 1938 A Hwx n.. 4 :anni

A TTORNEX Jan. 16, 1940. w. R. SCHL-'AGE Doon Loox Original Filed Jan. 17, 1938 2 Sheets-Sheet 2 A TTORNEY:

Patented Jan. 16, 1940 UNITED STATES Doon Loox Walter R. Schlage, Palo Alto, Calif., assignor to Schlage Lock Company, San Francisco, Calif., a corporation of California Application January 17, 1938, Serial No. 185,373 Renewed November 29, 1939 l1 Claims.

This invention relates to door locks, and particularly to that type known as key or turn actuated auxiliary locks.

The object of the present invention is gener- .5 ally to improve and simplify the construction and operation of locks of the character described; to provide a lock which may be assembled and mounted in a door by the mere boring of two holes and without the use of any screws, bolts ,1.0, or similar fastening means; to provide a lock having two tubular housings, one extending through the other, and in conjunction therewith an anchor plate whereby the housings are interlocked with relation to each other, and also are centered and aligned; to provide a lock'which may be key-actuated from one or both faces of the door, or by a thumb-turn from one or both faces, or by a thumb-turn on one side and a key on theother; to provide' a lock in which the latch bolt is retracted by means of a rollback member but in which the spindlemay be entirely eliminated, as the rollback may be directly actuated either by a keyor a thumb-turn; to provide a lock in which the latch bolt may be dogged against depression when in full extended position, and further, to provide a lock in which the latch bolt may be retained when in full retracted position.

The lock is shown by way of illustration in the 130 accompanying drawings, in which Fig. 1 is a horizontal, longitudinal section through the lock, showing it mounted in a door; Fig. 2 is a vertical longitudinal section through the lock, showing it mounted in a door; y

, Fig. 3 is a vertical cross section taken on line III-III of Fig. 2;

` Fig. 4 is a perspective View of the tubular housing in which the latch bolt actuating mechanism is mounted; "40 l Fig. 5 is a perspective View of one of the bushv ings whereby the rollback member is retained in position when in the housing of the latch bolt actuating unit;

Fig. 6 is a perspective view of the lrollback member; j Fig. 7 is a perspective view of the latch bolt and the retractor bar; Fig. 8 is a perspective view of the latch bolt housing;

Fig. 9 is a perspective View of the anchor plate;

Fig. 10 is a perspective view of the washer whereby the thumb turn is secured against endwise removal;

Fig. 11 is a perspective view of the pin which retains the washer shown in Fig. 10; Fig. 12 is a perspective view of the thumb turn;

Fig. 13 is a horizontallongitudinal selction of 5, the lock showing a modified form` of the same;

Fig. 14 is a vertical longitudinal section taken on line XIV-XIV of Fig. 13;

Fig. 1.5 is a section similar to Fig. 14 showing the latch bolt in full retracted position; gli) Fig. 15 is a section similar to Fig. 13 showing the anchor plate released to permit removal of the housing containing the latch bolt actuating` mechanism;

Fig. 17 is a perspective view of the rollback l5 used in conjunction with the structure shown in Figs. 13 to 16 inclusive; and

Fig. 18 is a perspective view of the latch bolt and retractor bar used in conjunction with the structure shown in Figs. 13 to 16.

Referring to the drawings in detail, and particularly to Figs. 1 to 12, it will be noted that a lock is shown which employs ,two tubular housings, indicated at A and B respectively. The housing A contains the latch bolt mechanism and the housing B the latch bolt actuating mechanism. The housing A is closed at the outer end by a plug 2 in which is formed an opening 3 to receive'and guide a latch bolt 4. Secured as at 5 to the inner end of the latch bolt is a plate 3 0 6 which is punched or cut out to forma pair of arms '1 -l, connected at their inner ends by a bar 8 which will hereinafter be vreferred to as the retractor bar. Lugs 9 9 are also formed on the arms, and these extend into slots lll-lil formed v at the inner end of the housing or tube A to guide the' retractor bar. Openings such as shown at Il are formed in the opposite sides of the housing A and near the inner end thereof, through which the housing B extends when the two houslo ings are assembled in a door, thereby securing i the housing A both against rotation and against endwise movement with relation to the housing B, and also with relation to a door when mounted therein.

Means are also provided for securing the housing B against rotation and transverse movement with relation to the housing A and to a door vwhen mounted therein. This is accomplished by providing an anchor plate I4 which 0 a is slidably mounted in slots l5-I5 formed in the inner end of the housing A. The anchor plate has a pair of lugs I i-I 6 formed therein which enter perforations Il-Il (see Figs. 1 and 4) formed in the housing B. The interlock formed g5 by the lugs entering the perforations is maintained by a spring I8 interposed between the anchor plate and a cap I9 which closes the inner end of the housing A. The lugs on ther anchor plate, by entering the perforations in the housing B, secure said housing against both rotation and transverse movement with relation to the housing A and the door in which it is mounted.

Within the housing B are journaled two spaced circular discs 2li-20 which are connected to a roll back member 2l. Each disc is provided with a centrally disposed slot 22 into which extends means whereby rotational movement is transmitted to the discs and the rollback member carried thereby. The rollback member is maintained in a central position, or midway between the ends of the housing B,`by a pair of bushings 23 and 24, which are pressed into opposite ends of the housing, and which are secured against rotation when in the housing by a slot formed at their inner ends as indicated at 25 (see Figs. 1 and 5), as said slot receives the lugs I6 which accordingly serve another function besides that already specified, to wit, that of securing the bushings against rotation.

In order that the retractor bar may be engaged by the rollback member, a transverse slot 26 is formed in the housing B at a point midway between the discs 2li-2B. The slot not only permits such engagement but it also forms an additional guide for the retractor bar, and furthermore provides additional means for securing the housingB against transverse movement with relation to the housing A and the door. Engagement between the retractor bar and the rollback member is maintained at all times by means of a spring r28 interposed between the plate B and a crossbar 29 which passes between the arms of `the retractor bar. 'Ihe main function of this spring is, of course, that of projecting the latch bolt 4, but its second function is that of maintaining engagement between the retractor bar 8 and the rollback member 2|. The housing A is slotted on opposite sides, as shown at 30, to receive the ends of the spring saddles' or crcssbar 29, the slots being wide enough to permit said bar to be passed through the housing or tube A during the assembling of the mechanism, the ends of the bar being offset as shown at 3l to form shoulders whereby the bar is secured against lateral movement with relation to the housing A when inserted.

The bushing 24 will., in the structure here disclosed, serve two functions: first, that of a retainer to secure the rollback member in a central position within the housing B; and second, that of forming a housing for the core of a pin tumbler -or similar keyactuated mechanism, generally indicated at 32. The bushing is slotted as shown at 33 (see Figs. 3 and 5) to permit the pin tumblers` or plates to extend into the same when the key 34 is removed, but they are retracted from said slot when the key is inserted, as shown in Fig. 3, so as to permit rotation of the core by means of the key. The inner end of the key, when inserted in the tumbler lock, extends beyond the same and into the slot 22 of the disc 20, as plainly shown in Fig. 3; hence by rotating the key, rotational movement is at the saine time transmitted to the discs 20 and the rollback member 2|, and as the `rollback memberis rotated, it will engage the inner face of the retractor bar 3 and thus force it rearwardly and thereby cause retraction of the latch bolt 4. Conversely, by rotating the key in the'opposite direction, the latch bolt will be projected by means of the spring 28. A key mechanism such as shown in Fig. 3 may be inserted in both ends of the housing B if desired, or a thumb-turn such as shown in Fig. 3 may be placed on one side and a key mechanism on the other, or two thumbturns may be placed one on each end. The thumb-turn merely consists of a knob or similar means such as shown at 35. A flat bar 36 is secured thereto, and the inner end thereof projects into the slot 22 of the adjacent disc 20; thus by merely rotating the thumb-turn, rotational movement is transmitted to the rollback member, and the latch bolt will again be retracted, or projected, depending upon the direction of rotation of the thumb-turn. A turning movement of is all that is required to bring about complete retraction of the latch bolt, and tc prevent further rotation a lug 31 is formed on the inner face ci the retractor bar, which is engaged by one edge or another of the rollback member.

In actual practice, the tube or housing A will be closed at opposite ends by the plug 2 and the closure i9, and it will contain the latch bolt 4, the retractor, the spring 28, the spring saddle 23, the anchor plate M and the spring i8. The housing or tube B will contain the rollback member, the key-actuated mechanism, the bushings and the thumb-turn. Two separate units are thus provided, each containing its own mechanism, one unit being termed the latch bolt unit and the other the latch bolt actuating unit. To assemble these units in a door, it is only necessary to bore two holes therein, one through i the edge of the door to receive the housing A, and one transversely through the door to receive the housing B. After the holes are bored, the housing A is first inserted, to assume the position shown in Fig. 1. inwardly and depressed beyond its normal retracted position. In this position, the housing B may be inserted, as it will pass between the arms l of the retractor bar. The moment the .housing B is fully inserted, the bolt may be released, and if exact alignment between the retractor bar and the transverse slot 26 does not exist, a slight transverse movement of the housing B in one direction cr another will bring about registration, andthe latch bar will thus enter the cross-slot 25 and will engage the inner face .of the retractor bar, or in other words assume the .position shown in Fig. 2. If the perforations I7 in thehousing B are in register with the lugs i6, they will enter, but if they do not quite register, a slight rotation of the housing B in one direction or another will bring about such registration, and the lugs will enter and thus secure said housing B against rotation and transverse movement with relation both to the housing A and to the door. Bushing thimbles such as indicated at 4S and 4l are then slipped over each end of the housing B and pressed into the small space formed between the hole in the door` and the housing B. These bushings bring about a snug t and give an added nish, and complete the mounting or insertion of the lock. The lock thus inserted is firmly held in place without the use of any screws, bolts, or like fastening means, as the housing B is secured by the lugs of the anchor plate, while the housing A is secured by the housing B, as it extends therethrough. If it is desired to remove the lock for inspection, repair, or otherwise, this is accomplished by merely depressing the latch bolt 4 beyond its The latch bolt is then pushed v removed, and when 'this is removed, housing A may be removed.

'While 'the structure shown in Figs. 1 to 12 inclusive is described in connection with a latch bolt, the same identical structure, with very slight additions, may be used -ior what is known y as a dead-lockmgbolt. rIhis structure is shown in Figs. 13 to 18 inclusive. The only changes required in changing from one type of lock to the other are, to form a lug on the lower arm of the retractor ban'as indicated at @i2 (see Figs. 14, 15 and 18), and a detent t3 on the inner face of the retractor bar. In addition thereto, a V- shaped slot i4 is formed in the outer face of the rollback member. rihe housing A containing the latch bolt mechanism will be thesame as in theA structure shown in Figs. 1 to 12 inclusive; the housing B will be the same; the key-actuated turn' and the thumb-turn will be the same; the anchor plate Will be the same; the spring 28 will be the same, and so will the spring saddle bar 29. The only dierence `will be the addition of the lug 4Z, the detent 43 and the formation of the V-shaped slot fit in the face of the rollback member. These additions bring about the following changes.y When. a bolt, indicated at 5S, is fully extended, as shown in 14, it will not vbe possible to depress the same, as the lug 42 will engage the outer face of the rollback member, and thus depression is prevented. Theonly time it is possible to depress or retract the bolt is when theA rollback member is rotated, either through the thumb turn or the key. With this structure, it is also possible to retain the deadlocking bolt in retracted position by rotating the rollback member a completel half-revolution. When this is done, the latch bolt and the retractor, together with the rollback, will assume the position shown in Fig. 15. In that position, the detent t3 will enter the V-shaped slot M formed in the outer face of the rollback member, and the latch bolt and retractor will be retained inffull retracted position and can not be released therefrom except by rotation of the rollback member by means of the key o-r the thumb-turn. The manner of releasing the anchor plate is identical in both structures. It is accomplished by depressing the latch bolt beyond its normally retracted position, shown in Fig. 15, to the position shown in Fig. 16. In this position, the inner face ci the retractor bar engages the anchor plate and forces it `rearwardly against the tension of the spring itl a suilicient distance to retract the lugs it from the slots at rthe innerends of the bushings and the perforations Il in the housing B, thereby leaving the housing B free to be removed. At all. other tim-es the housing is anchored by means of the lugs as previously described. The dead-locking bolt shown in Figs. 13tc 18 inclusive may be keyactuated from both sides, or thumb-turn actuated from both sides, or actuated by a key on one side and a thumb-turn on the other. The structure shown is `iust as simple and rigid as the mechanism described in Figs. l to 12, and in fact is identical therewith with the exception of the lug t2, the detent i3 and the slot 44; hence assembly and mounting thereof in a door will be the same, and removal thereof will be the same.

While certain features of the invention have been more or less specifically described and illustrated, I nevertheless wish it understood that changes may be resorted to within the kscope of the appended claims, and that the materials and finish employed may be such as the manuiacturer desires or varying conditions require.

Having thus described and illustrated my invention, what I claim and desire to secure by Letters Patent is:

l. In a lock of the character described a latch 4boltnnit and a latch bolt actuating unit extending through the latch bolt unit, anchor mleans carried by the latch bolt unit to secure the latch bolt actuating unit against rotation and transverse movement with relation to the latch bolt unit, .and cooperating means on the latch bolt actuating unit to receive the anchor means.

2. In a. lock oi the character described, a latch lbolt housing, a latch bolt mounted therein,` a retractor bar to which the latch bolt is secured, a second housing extending at right angles through the latch bolt housing, an anchor plate slidably mounted in the latch bolt housing, a pair of lugs on the anchor plate adapted tcenter perforations formed in the second housing, and a spring engageable with the anchor plate to normally maintain the lugs in the perforations, thereby to secure the second housing against rotation and transverse movement with relation toy the latch bolt housing.

3. In a lock of the character described a latch bolt housing and a housing enclosing a latch lbolt actuating mechanism.' said housings being vdisposed at right angles to each other and one extending through the other, means carried by the latch bolt housing for automatically interlocking the housings in alignment whenk one is bolt housing and a housing enclosing` a latch bolt actuating mechanism, said housings being disposed at right angles to each other and one extending through the other, asliding element l. carried by one of the housings to interlock and align the housings when assemble means in the housing which encloses the lati'ci` bolt actuating mechanism for receiving the sliding element, and another sliding element carried by the housings adapted to release the said interlock.

5. In a lock of the character described, a latch bolt housing, a latch bolt mounted therein, a retractor bar towhich the latch bolt is secured, a second housing extending at right angles through the latch bolt housing, an anchor plate slidably mounted in the latch bolt housing, a pair of lugs on the anchor plate adapted to enter perforations formed in the second housing, and

` a spring engageable with ithe anchor plate to normally maintain the lugs in the perforations,

thereby to secure the second housing against rotation and transverse movement with relation to the latch bolt housing. said anchor plate adapted to be engaged by the retractor bar when the latch bolt is depressed beyond its normal retracted position, so as to move the anchor plate away from vthe second named housing to Withdraw the lugs and release the second named 75 housing for removal from the latch bolt housing.

6. A lock comprising a tubular latch bolt housing, a second tubular housing disposed at right angles and extending through the latch bolt housing, said second tubular housing having a transverse slot formed therein, a latch bolt and connected retractor member slidably mounted in the tubular latch bolt housing, a retractor bar on the retractor member, normally positioned in the transverse slot of the second housing and securing said housing against transverse movement with relation to the latch bolt housing, means in the latch bolt housing forming an interlock between the two housings and securing the second housing against both rotation and transverse movement with relation to the latch bolt housing, and cooperating means in the second housing to receive the interlocking means.

7. A lock comprising a tubular latch bolt housing, a second tubular housing disposed at right angles and extending through the latch bolt housing, said second tubular housing having a pair of perforations formed therein, and an anchor plate carried by the latch bolt housing, and having lugs formed thereon adapted to enter the perforations to secure the second housing against both rotation and transverse movement with relation to the latch bolt housing.

8. A lock comprising a tubular latch bolt housing, a second tubular housing disposed at right angles and extending through the latch bolt housing, means securing the second housing against rotation and transverse movement with relation to the latch bolt housing, a pair of discs journaled in the second tubular housing, a rollback member carried by said discs, a cross-slot formed in the second tubular housing between the discs, a latch bolt in the latch bolt housing, a retractor connected therewith, and a retractor bar on the inner end of the retractor, extending through the cross-slot in the second named tubular housing and adapted to be engaged by the rollback member to retract the latch bolt.

9. A lock comprising a tubular latch bolt housing, a second tubular housing disposed at right angles and extending through the llatch bolt housing, means securing the second housing against rotation and transverse movement with relation to the latch bolt housing, a pair of discs journaled in the second tubular housing, a rollback member carried by said discs, a latch bolt in the latch bolt housing, a pair of rearwardlyextending arms secured to the latch bolt and straddling the second named housing, and a retractor bar connecting said arms and extending through the cross-slot in the second named housing, S as to be engaged by the rollback member.

l0. A lock comprising a tubular latch bolt housing, a second tubular housing disposed at right angles and extending through the latch bolt housing, means securing the second housing against rotation and transverse movement with relation to the latch bolt housing, a pair of discs journaled in the second tubular housing, a rollback member carried by said discs, a crossslot formed in the second tubular housing between the discs, a latch bolt in the latch bolt housing, m

a pair of rearwardly-extending arms secured to the latch bolt and straddling the second named housing, a retractor bar connecting said arms and extending through the cross-slot in the second named housing so as to be engaged by the rollback member, and lugs on the arms extending into slots formed in the tubular latch bolt housing to guide the retractor bar and the latch bolt.

11. A lock comprising a latch bolt housing, a second housing disposed at right angles and extending through the latch bolt housing, said second housing having a transverse slot formed therein, means for securing the second housing against rotation and transverse movement with relation to the latch bolt housing, a spindle extending through the second housing, said spindle having a transverse slot formed therein in alignment with the transverse slot in the second housing, a latch bolt mounted in the latch bolt housing, a retractor connected with the latch bolt, and a retractor bar on the retractor, extending through the transverse slots formed in the second housing and in the spindle and securing the spindle against endwise removal from the second housing.

WALTER R. SCHLAGE. 

